JP2002016858A - Digital broadcast receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a digital broadcast receiver having means for recording/ reproducing a received broadcast program in which reproduction rate of the recording/reproducing means can be varied automatically depending on the audio level of each scene. SOLUTION: In the reproduction, a reproduction rate controller 5 controls the reproduction rate of a hard disc drive 4 dynamically to a level corresponding to a audio level generated from an audio signal generating section 9. Consequently, a scene of high audio level, e.g. a point get scene, can be reproduced in slow motion and other scenes of low audio level can be reproduced at a normal rate in relay broadcast program of sport. Alternatively, a scene of low audio level can be reproduced at a high rate and a scene of high audio level can be reproduced at a normal rate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast receiving apparatus provided with information recording / reproducing means such as a hard disk device which can be accessed randomly.

[0002]

2. Description of the Related Art As an example of a conventional digital broadcast receiving apparatus, FIG. 8 shows a configuration of an apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 10-322622. This device includes an antenna 101, a tuner 102, a demultiplexing circuit 106, a video signal generation unit 1
07, display device 108, audio signal generation unit 10
9, a speaker 111, an operation unit 112, and a CPU 113. The CPU 113 controls the operation of the receiving device, and a program for the operation is stored in the ROM 121. Data that needs to be temporarily stored during the operation is R
Stored in the AM 122.

[0003] The operation of this receiving apparatus will be described. A signal received from the antenna 101 is subjected to processing such as frequency conversion and digital demodulation by the tuner 102,
06. The demultiplexing circuit 106 separates the data processed by the tuner 2 into video data, audio data, and program guide information.

[0004] The video data is sent to a video signal generator 107, where a video signal is generated and supplied to a display device 108, where the video of the program is displayed. In addition, the audio data is sent to the audio signal generation unit 109, where the audio is generated and supplied to the speaker 111.

On the other hand, the program guide information is stored in the RAM 122 via the CPU 113. The CPU 113 is the operation unit 1
The program guide screen data or various setting screen data is generated based on the instruction from the controller 12 and sent to the video signal generator 107. Thereby, a program guide screen or various setting screens are displayed on the display device 108.

[0006] It is also known that a hard disk device for recording and reproducing digital video signals is added to the above configuration to enable recording and reproduction of programs.

[0007]

When playing a sports program such as a soccer game or a baseball game, if the playback speed is reduced in important scenes such as scoring scenes, and the playback speed is increased in other scenes, the user can enjoy a short time. However, the playback speed of the recording / playback means of the conventional digital broadcast receiving apparatus is constant, and the playback speed cannot be changed. Even if the playback speed can be changed, the user must perform a complicated operation of changing the playback speed every time an important scene such as a scored scene occurs.

SUMMARY OF THE INVENTION An object of the present invention is to provide a digital broadcast receiving apparatus having a recording / reproducing means for a received signal. It is an object of the present invention to provide a device whose playback speed is changed.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide a digital broadcast receiving apparatus having a recording / reproducing means for recording and reproducing a received digital broadcast signal, wherein the reproduction speed of the recording / reproducing means is reproduced from the recording / reproducing means. The digital broadcast receiving apparatus is provided with first reproduction speed control means for dynamically controlling a value according to a level of an audio signal.

In accordance with a first external instruction, means for storing the reproduction speed of the recording / reproducing means at the moment when the first instruction is input, and in accordance with a second external instruction, Second playback speed control means for setting the playback speed to the stored playback speed may be further provided.

Means for calculating a recording time from the start of recording of the program to the recording / reproducing means to a stop thereof, and a message for prompting the user to input the calculated recording time and a desired reproduction time of the recorded program; And a third playback speed control unit that controls the playback speed of the recording and playback unit so that the recorded program is finished playing at the input desired playback time.

The third reproduction speed control means controls the recording / reproduction means so as to end reproduction of the program at the input desired reproduction time while changing the reproduction speed according to the level of the reproduced audio signal. can do.

According to an external instruction, means for storing a reproduction speed of the recording / reproducing means at a moment when the instruction is input, and reproducing when the reproducing speed of the recording / reproducing means exceeds the stored reproduction speed. Means for silencing the sound that has been generated.

[0014] The apparatus may further comprise means for reserving recording of the program, and the recording and reproducing means may have a recording medium which can be accessed randomly.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 shows a configuration of a digital broadcast receiving apparatus according to a first embodiment of the present invention. In the figure, 1 is an antenna, 2 is a tuner, 3 is a signal controller for switching a signal path, 4 is a hard disk device, 5 is a reproduction speed controller, 6 is a demultiplexing circuit,
7 is a video signal generation unit, 8 is a display device, 9 is an audio signal generation unit, 10 is a mute ON / OFF circuit, 11 is a speaker, 13 is a CPU, 14 is a memory, 15 is a user of the receiving device, and 16a is an operation unit. , 17a are detection units for detecting a user's instruction input via the operation unit 16a, 23 is an audio level conversion unit, 24 is a weighting unit, and 25 and 26 are address memories.

Next, the operation of the apparatus having the above configuration will be described. The signal received by the antenna 1 is supplied to the tuner 2, and the tuner 2 performs processing such as frequency conversion and digital demodulation. The signal processed by the tuner 2 is transmitted to the signal controller 3
Sent to When recording this signal, the signal controller 3 sends the signal to the hard disk drive 4 based on a command from the CPU 13 and compresses and writes the signal according to, for example, MPEG2. If not recorded, it is sent to the demultiplexing circuit 6 as it is. When reproducing the recorded program, the signal controller 3 reads a signal from the hard disk device 4 based on a command from the CPU 13, expands the signal, and sends it to the demultiplexer 6. The demultiplexing circuit 6 separates a signal sent from the signal controller 3 into video data, audio data, and program guide information.

The video data is sent to a video signal generator 7,
A video signal is generated. This video signal is sent to the display device 8 and the video of the program is displayed. The audio data is sent to the audio signal generation unit 9 to generate an audio signal, and the generated audio signal is sent to the speaker 11.

On the other hand, the program guide information is sent to the memory 14 via the CPU 13 and stored therein. The memory 14 stores a program for processing program guide information, a program for managing program recording, and a program for decoding an input from the operation unit 16a. The CPU 13 follows an instruction input through the operation unit 16a, Program guide screen data and various setting screen data are generated and sent to the video signal generation unit 7.
As a result, a program guide screen and various setting screens are displayed on the display device 8.

The user 15 can record the recorded program, start and stop reproduction, adjust the reproduction speed, and the like by operating the operation unit 16a. For example, when the user performs an operation of changing the reproduction speed, the detection unit 17a detects the operation and notifies the CPU 13 of the operation. The CPU 13 sends a signal to the playback speed controller 5, and the playback speed controller 5 changes the playback speed of the hard disk device 4 according to the signal.

In a sports program such as a soccer or baseball broadcast, the voice level is generally high in an important scene such as a scoring scene or a fine play. In the present embodiment, paying attention to this, the audio level is used as an index indicating the importance of the scene, and the reproduction speed can be automatically adjusted according to the audio level.

For this purpose, the audio signal generated by the audio signal generator 9 is sent to an audio level converter 23, where an audio level value representing the level of the audio signal is generated. This audio level value is sent to the weighting unit 24, and the weighting unit 24
Divides the interval between the minimum value and the maximum value of the audio level value into equal intervals, checks which order the respective audio level values correspond to in the interval, and quantizes the audio level value to generate a weight value. The weight value is a value used when the reproduction speed controller 5 calculates the reproduction speed, and the address memory 25 stores the address value of the audio signal in association with each weight value.
This address value is also stored in the address memory 26 of the hard disk device 4 via the CPU 13.

At the time of reproduction, the reproduction speed controller 5 refers to the contents of the address memory 26, as shown in FIG.
The reproduction speed is controlled so that the reproduction speed becomes lower as the audio level becomes higher. Therefore, a scene with a high audio level such as a scoring scene in a sports broadcast program or the like can be reproduced at a slow speed, and another scene with a low audio level can be reproduced at a normal speed. Alternatively, a scene with a low audio level can be reproduced at a high speed, and a scene with a high audio level can be reproduced at a normal speed.

Embodiment 2 FIG. FIG. 3 shows the configuration of the digital broadcast receiving apparatus according to the second embodiment of the present invention. Embodiment 2
Differs from the first embodiment in that an operation unit 16b with a learning function is used instead of the operation unit 16a.

In the second embodiment, for example, while the recorded program is being reproduced at the speed corresponding to the audio level as described above, the user operates the "reproduction speed learning button" of the operation unit 16b with the learning function.
When is pressed, the playback speed at that time is stored. afterwards,
When playing another program, the user can use the "play speed button"
Is pressed, the detection unit 17a detects the
The CPU 113 sends a command to the playback speed controller 5 to read data from the hard disk device 4 at the learned playback speed. Therefore, the user can reproduce the program at a speed that suits his or her preference.

Thus, for example, when a user plays back a program for language learning, or when an elderly or hearing-impaired user plays back a program, the program can be played back at a speed that can be heard by the user or a desired speed. Can be.

Embodiment 3 FIG. FIG. 4 shows a configuration of a digital broadcast receiving apparatus according to a third embodiment of the present invention. Embodiment 3
The second embodiment differs from the first embodiment in that a recording time calculator 18 for calculating the time from the start to the stop of the recording and a text converter 19 for converting the calculated recording time into text data are provided.

The operation of the device according to the third embodiment will be described. When the user presses the “record button” on the operation unit 16a to start recording the program, and after the program ends, presses the “record button” again to end the recording, and the recording time calculation unit 18 calculates the recording start time and the recording end time. Calculate the time between The text converter 19 converts the calculated time into text data, and sends the text data to the video signal generator 7. Thereby, a screen as shown in FIG. 5 is displayed. For example, when the user wants to change the playback speed when playing back a program recorded on the hard disk device 4 for two hours, the operation unit 16 a
Press the "1" key. Then the screen display of Fig. 6 appears,
If the user wants to play this program in one hour, he presses the "1" key. The detection unit 17a detects this and detects C
Send to PU13. The CPU 13 executes the reproduction speed processing program in the memory 14 and sends a command to the reproduction speed controller 5 to double the reproduction speed. In accordance with this instruction, the reproduction speed controller 5 reads and reproduces the data compressed according to, for example, MPEG2 and written to the hard disk device at a double speed by a method such as thinning-out. If the recording time is short, the user can specify the reproduction time in minutes.

The demultiplexing circuit 6 separates video data, audio data and program guide information from the reproduction signal sent from the signal controller 3. The video data is sent to the video signal generator 7 to generate a video signal, and is supplied to the display device 8. The audio data is sent to the audio signal generator 9, where an audio signal is generated and sent to the speaker 11.
This allows the user to watch a two-hour program in one hour.

The case where the recording is started and stopped by the user pressing the "recording button" of the operation input section 16a has been described above. The memory 14 has a reservation operation screen, a program guide information processing program, a program A recording processing program or the like is stored, and the apparatus can automatically start and stop recording a program based on the contents reserved by the user on the reservation operation screen.

In this case, when the reserved program is received, the recording on the hard disk device 4 is automatically started, and the recording is stopped when the program ends. Recording time calculator 18
Calculates the time from the start of recording to the stop of recording, and the text conversion unit 19 converts the calculated time into text data. This text data is sent to the video signal generation unit 7, and also in this case, a screen display as shown in FIG. 5 is performed. Thereafter, the same processing as described above is performed, and the user can finish watching the two-hour program in one hour.

In the third embodiment as well, the reproduction speed can be changed according to the audio level in the same manner as in the first embodiment. That is, the audio signal generated by the audio signal generation unit 9 is sent to the audio level conversion unit 23, and an audio level value representing the level of the audio signal is generated. The audio level value is sent to the weighting unit 24, which divides the interval between the minimum value and the maximum value of the audio level value into equal intervals and determines which rank of each audio level value corresponds to which rank in the interval. It examines and quantizes the audio level value to generate a weight value. The address memory 25 stores the address value of the audio signal in association with each weight value. This address value is also stored in the address memory 26 of the hard disk device via the CPU 13.
At the time of reproduction, the reproduction speed controller 5 stores the address memory 2
Referring to the contents of No. 6, while increasing the reproduction speed in a scene with a low audio level and decreasing the reproduction speed in a scene with a high audio level, the reproduction speed is set so that the reproduction ends in a time set by the user. Control.

Embodiment 4 FIG. FIG. 7 shows a configuration of a digital receiving apparatus according to a fourth embodiment of the present invention. Embodiment 4
In the apparatus according to the third embodiment, the operation unit with learning function 16b is used in place of the operation unit 16a, and the learned playback speed is compared with the current value of the playback speed of the hard disk device 4 in place of the detection unit 17a. Comparison detection unit 1 with function
7b.

When the reproduction speed increases, the sound becomes difficult to hear, and further the reproduction speed increases. When the reproduction speed exceeds a certain limit, the sound simply becomes noise. In the fourth embodiment,
If the reproduction speed exceeds this limit speed, the sound can be muted (silenced).

For this reason, when the user thinks that the current reproduction speed is the limit speed at which sound can be heard, the user presses the "reproduction speed learning button" of the operation unit 16b with the learning function and compares this speed with the comparison detection unit. The data can be stored in the buffer 17b and learned. The comparison and detection unit 17b compares the learned limit playback speed with the playback speed of the hard disk device 4, and when the limit playback speed is exceeded, the CPU 1
Inform 3 The CPU 13 issues a mute ON command to the mute ON / OFF circuit 10. As a result, the sound is muted (silenced), and the difficulty of hearing is eliminated.

[0035]

According to the first aspect of the present invention, since the reproduction speed is changed according to the audio level, a scene with a high audio level, such as a scoring scene of a sports broadcast program, is reproduced at a low speed and another scene with a low audio level is reproduced. The scene can be played at normal speed. Alternatively, a scene with a low audio level can be reproduced at a high speed, and a scene with a high audio level can be reproduced at a normal speed. This allows the user to finish watching the program in a short time and to enjoy the program sufficiently, for example, when there is no time.

According to the invention described in claim 2, for example,
When a user plays a program for language learning, or when an elderly or deaf user plays a program, the program can be played at a speed that can be heard or preferred by the user.

According to the third aspect of the present invention, the user can finish watching the recorded program in a short time only by inputting a simple instruction on the setting screen.

According to the fourth aspect of the present invention, the recorded program can be watched in a short time only by inputting a simple instruction on the setting screen, and at this time, the audio level can be broadcasted in a sports broadcast or the like. Can be enjoyed at a normal speed.

According to the fifth aspect of the present invention, when the reproduction speed exceeds the limit speed at which the user can hear the sound, the sound is automatically muted, and the difficulty in listening is eliminated.

According to the invention described in claim 6, the user can reserve the recording of the program at a convenient time and automatically record the program, and can instantly locate the desired program and reproduce it. can do.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a digital broadcast receiving apparatus according to a first embodiment of the present invention.

FIG. 2 is a graph illustrating a relationship between an audio level and a reproduction speed.

FIG. 3 is a configuration diagram of a digital broadcast receiving apparatus according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a digital broadcast receiving apparatus according to a third embodiment of the present invention.

FIG. 5 is an example of a screen display in the device according to the third embodiment.

FIG. 6 is an example of a screen display in the device according to the third embodiment.

FIG. 7 is a configuration diagram of a digital broadcast receiving apparatus according to a fourth embodiment of the present invention.

FIG. 8 is a configuration diagram of a conventional digital broadcast receiving device.

[Explanation of symbols]

1 antenna, 2 tuner, 3 signal controller, 4 hard disk drive, 5 playback speed controller, 6 demultiplexing circuit, 7 video signal generator,
8 display device, 9 audio signal generator, 1
0 Mute ON / OFF circuit, 11 speaker,
13 CPU, 14 memory, 15 users, 16
a Operation unit, 16b Operation unit with learning function, 17a
Detecting unit, 17b comparison detecting unit, 18 recording time calculating unit, 19 text converting unit, 23 audio level converting unit, 24 weighting unit, 25, 26 address memory.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/93 F term (Reference) 5C025 AA29 BA09 BA25 CA09 CB03 CB06 CB08 DA01 5C052 AA01 AC01 CC01 CC11 DD04 DD06 5C053 FA20 FA23 GB11 GB38 HA18 HA23 HA27 JA07 JA21 JA23 KA01 KA24 LA06 LA07 LA11

Claims (6)

[Claims] 1. A digital broadcast receiving apparatus having a recording / reproducing means for recording and reproducing a received digital broadcast signal, wherein a reproduction speed of the recording / reproducing means is set to a value corresponding to a level of an audio signal reproduced from the recording / reproducing means. A digital broadcast receiving apparatus comprising: a first reproduction speed control means for dynamically controlling the reproduction speed. 2. A means for storing a reproduction speed of said recording / reproducing means at a moment when the first instruction is inputted according to a first external instruction, and a recording / reproducing means according to a second external instruction. 2. The digital broadcast receiving apparatus according to claim 1, further comprising second playback speed control means for setting a playback speed of the means to the stored playback speed. 3. A means for calculating a recording time from a start to a stop of recording of a program in said recording and reproducing means, and a message for prompting the user to input the calculated recording time and a desired reproduction time of the recorded program. Screen display means; and third playback speed control means for controlling a playback speed of the recording / playback means so that the recorded program is finished playing at the input desired playback time. Claim 1
A digital broadcast receiving device according to claim 1. 4. The recording / reproducing means, wherein the third reproducing speed control means changes the reproducing speed according to the level of the reproduced audio signal so as to finish reproducing the program at the input desired reproduction time. 4. The digital broadcast receiving apparatus according to claim 3, wherein 5. A means for storing a reproduction speed of said recording / reproducing means at a moment when said instruction is input, in accordance with an external instruction, and when a reproduction speed of said recording / reproducing means exceeds said stored reproduction speed. 5. The digital broadcast receiving apparatus according to claim 1, further comprising: means for silencing reproduced sound. 6. The apparatus further comprises means for reserving program recording,
6. The digital broadcast receiving apparatus according to claim 1, wherein the recording / reproducing unit has a recording medium that can be randomly accessed.